成昆线燕岗至广通段扩能方案研究

Research on the Expansion Plan for Yangang to Guangtong of Chengdu-Kunming Railway

研究目的:作为基础设施,铁路投资巨大,应尤其注意前期的总体顶层设计。对于既有线改造而言,如何选择合适的扩能改造方案是摆在建设者面前的第一个难题,合理与否将直接影响到铁路建设的实施效果和成败。本文以成昆线燕岗至广通段为例,对其扩能的必要性及研究思路进行阐述,对各种不同的扩能方案进行详细研究。研究结论:(1)既有成昆铁路技术标准低,运能无法满足沿线的需求,急需进行扩能改造;(2)单线扩能方案及增建二线方案存在不满足运量要求、速度目标值低、旅行时间长、既有线利用率低等一系列问题,不宜采用;(3)作为西北、四川与云南、东盟、南亚之间交流的主通道,在投资差别不大的情况下,按新建200 km/h双线的标准对成昆铁路进行扩能改造是适宜的;(4)本文的研究结果可应用于类似的既有线扩能提速改造项目。

Research purposes： As an infrastructure, railway investment is huge, we should pay particular attention to the top - level design. For the reconstruction of existing railway, how to choose the suitable scheme of revamping is put in the first problem before the builders, reasonable or not will directly affect the implementation effectand the success or failure of railway construction. In this paper, we take Yangang to Guangtong section as an example, described the necessity and the research ideas of itsexpansion , detailed study of the different expansion plan. Research conclusions：（ 1 ） The existing Chengdu -Kunming Railway ＂s technical standard is very low, it ＂s transport capacity can not meet demand, urgent need to capacity expansion. （2） Single expansion plan and construction of the second program have range of issues, such as does not meet the traffic requirements, low speed, long travel time, low utilization of existing lines, should not be used. （3） As the main channel of communication between northwest, Sichuan and Yunnan, ASEAN, South Asia,as the case of investment is not very different, press New 200 km/h double standard on the Chengdu -Kunming Railway for capacity expansion is appropriate. （4） The research results can be applied to similar existing lines expansion and speed improvement projects.